Oxeia (Greek: Οξεία) is a Greek island in the Ionian Sea. As of 2011, it had no resident population. It is the chief island in the southern group (the Ouniades) of the Echinades, part of the Ionian Islands. Oxeia possesses the highest point in the Echinades, 421 metres (1,381 feet). It is situated near the mouth of the river Acheloos, off the coast of Aetolia-Acarnania. The island is around 5 kilometres (3 miles) in length and its width is approximately 2 km (1 mile).